Answer this question truthfully
### Question: What causes Nightmare?
### Response: Anxiety and stress are the most common causes of nightmares.
A major life event occurs before the nightmare in some cases.
Other causes of nightmares include:
Abrupt alcohol withdrawal Breathing disorder in sleep (sleep apnea) Death of a loved one (bereavement) Excessive alcohol consumption Illness with a fever Recent withdrawal from a drug, such as sleeping pills Side effect of a drug Sleep disorder (for example, narcolepsy or sleep terror disorder) Eating just before going to bed, which raises the body's metabolism and brain activity